3 image::easymini-top.jpg[width="5.5in"]
5 EasyMini is built on a 0.8 inch by 1½ inch circuit board. It's
6 designed to fit in a 24mm coupler tube. The connectors and
7 screw terminals match TeleMini v2.0, so you can easily swap between
10 === EasyMini Screw Terminals
12 EasyMini has two sets of four screw terminals on the end of the
13 board opposite the telemetry antenna. Using the picture
14 above, the top four have connections for the main pyro
15 circuit and an external battery and the bottom four have
16 connections for the apogee pyro circuit and the power
17 switch. Counting from the left, the connections are as follows:
19 [options="header",grid="all",cols="2,3,10"]
21 |Terminal #|Terminal Name|Description
24 |Main pyro channel connection to pyro circuit
28 |Main pyro channel common connection to battery +
32 |Positive external battery terminal
36 |Negative external battery terminal
40 |Apogee pyro channel connection to pyro circuit
44 |Apogee pyro channel common connection to battery +
48 |Switch connection to flight computer
52 |Switch connection to positive battery terminal
55 === Connecting A Battery To TeleMini v2.0
57 There are two possible battery connections on
58 EasyMini. You can use either method; both feed
59 through the power switch terminals.
61 One battery connection is the standard Altus Metrum
62 white JST plug. This mates with single-cell Lithium
63 Polymer batteries sold by Altus Metrum.
65 The other is a pair of screw terminals marked 'Battery
66 +' and 'Battery -'. Connect a battery from 4 to 12
67 volts to these terminals, being careful to match polarity.
69 === Charging Lithium Batteries
71 Because EasyMini allows for batteries other than the
72 standard Altus Metrum Lithium Polymer cells, it cannot
73 incorporate a battery charger circuit. Therefore, when
74 using a Litium Polymer cell, you'll need an external
75 charger. These are available from Altus Metrum, or
78 === Using a Separate Pyro Battery with EasyMini
80 As described above, using an external pyro battery involves
81 connecting the negative battery terminal to the flight
82 computer ground, connecting the positive battery terminal to
83 one of the igniter leads and connecting the other igniter
84 lead to the per-channel pyro circuit connection.
86 To connect the negative pyro battery terminal to TeleMini
87 ground, connect it to the negative external battery
88 connection, top terminal 4.
90 Connecting the positive battery terminal to the pyro
91 charges must be done separate from EasyMini, by soldering
92 them together or using some other connector.
94 The other lead from each pyro charge is then inserted into
95 the appropriate per-pyro channel screw terminal (top
96 terminal 1 for the Main charge, bottom terminal 1 for the
99 === Using an Active Switch with EasyMini
101 As explained above, an external active switch requires three
102 connections, one to the positive battery terminal, one to
103 the flight computer positive input and one to ground. Use
104 the negative external battery connection, top terminal 4 for
107 The positive battery terminal is available on bottom
108 terminal 4, the positive flight computer input is on the